2 answers

later open tweak-tool and the "window" tab you see the titlebar with the Maximize and Minimize buttons, just you need enable this, this happen cuz gnome disable this buttons, but with tweak tool you can solved this.

Sorry, but I have used Linux since 1992, never complained, always a fan, been a firm believer. But how the f... could you guys think of removing the minimize button on windows in the default Fedora Core 25 desktop manager??? Are you f...... insane??

Over the years I've probably spent a couple of months accumulated getting my usb mouse and other stuff working on Linux. This has been fairly stable the last decade or so. And now you go and remove the minimize button??